Due to its applications in telecommunications and hearing aids, this has been an active area of research for many years. Classical speech enhancement algorithms include spectral subtraction methods [1]}, Wiener filtering [2]}, MMSE (minimum mean-square error) and OM-LSA (optimally modiﬁed log-spectral amplitude) estimation [3]}, [4]}, as well as subspace methods [5]}, [6]}.
